Detachable lamp.



J. E. MARSDEN.

DETACHABLE LAMP.

APPLICATION rxuzo JUNE 18, 1914.

Patented May 4, 1915.

R o T N E v m WITNESS ATTORN EY a i STATES PATENI cur os JOHN E; MARSDEN; OF PH ILADELP HiE, PENNSYI-zVANIA;

DETAGHABLE LAMP.

To all whom it may concern: l

Be it known that I, JOHN E. Mlinsonma citizen of the United States, residing in the cit of Philadelphia, county of Philadelphla, and State of Pennsylvania, have invented a new and useful Detachable Lamp, 7

of which the following is a specification.

My invention relates to detachable electric lamps, and more particularly detachable electric lamps for use in vehicles, such as automoblle tourlng cars or limousines.

My invention resides 1n a detachable electric lamp structure in which the lamp itself tachable lamp and globe held in its supports. Fig. 2 is a section taken on the line XX of Fig. 1. Fig. 3 is a section taken on the line Y--Y ofv Fig. 1.

In the drawing, S represents any suitable support, such as the framework or body of a vehicle or automobile. Upon this is placed or disposed a base or strip B of insulating material upon whose ends are secured by screws 1 the substantially rigid metal brackets 2 to which are secured in turn the yielding or resilient metallic members 3 having indentations or recesses 4 and guide grooves 49 adapted to receive the metallic buttons or projections 5 upon the metal ferrules 6.

Co-axial with and secured to the ferrules 6 are the metallic rods 7 upon which are screw threaded or otherwise adjustable the tubular metallic members 8 having at their outer ends the fingers 9 adapted to receive the metallic rings 10 secured upon the opposite ends of the electric lamp bulb 11. Within the evacuated lamp bulb 11 is the lamp' filament 12 one of whose terminals connects with the near ring 10 and whose other terminal connects by conductor 13, extending through an aperture 14 in the first mentioned ring 10, along the outside of the lamp bulb 11, which conductor 13 connects with Specification of Letters Patent.-

' Application filed June 18, IQM. Serial No. 845,805

the other ring 10 at the opposite end' of the bulb 11. p

A globe 15 of glass or other suitable material, which however must be a non-conductor of electricity, surrounds the electric lamp and its immediate supports and extends into the ferrules 6 where the globe 15 has cylindrlcal ends 16, the globe being open at both ends as shown. The globe serves the purpose of surroundmg and inclosing the electric lamp, and serves the additional purpose of stiffening the whole'device by snug engagement in the ferrules 6, thus alining the member 7 and 8 at opposlte ends of the lamp and keeping the lamp and parts properly in alinement and in proper position within the globe.

One conductor supplying current to the lamp is connected to the one bracket 2, and the other conductor of the circuit is connected to the other bracket 2 so that thepath of the current will be from the one Y rateateana 4,19%.-

thence through conductor 13 to the other I ring 10, the associated fingers 9, tubular member 8, rod 7, button 5 associated with the other resilient member 3 and bracket 2 to the other conductor of the supply circuit.

By slmply grasping the globe 15 it and the contained lamp. may be withdrawn from the spring members 3 whose free ends are outwardly flaring to assist guiding the parts when returning the same to the position shown in the drawing.

What I claim is:

1. detachable electric lamp structure comprlslng a globe of insulating material, conducting closures on opposite ends of said globe, an electric lamp having terminals at opposite ends thereof, means rigidly supalinemen t with each other, an electric 1am In testimony whereof I have hereto aflixed having terminals on opposite ends thereo m signature in the presence of the two 10 meanls on said rodlslreceninbg salizdampdtersu scrlbing witnesses. mina s 'su stantia y-rigi me e an resilient members supported by said brackets O D supporting said ferr fiefiand afiording e1ec- Witness em v trical communication with the terminals of Nnum FmLn,

said lamp through said ferrules and rods. 7 ALICE S. Mensa. 

